Edward d



E. D. PUTT.

BEAD TRIMMING MACHINE.

APPLICATlON men MAY 21, 1918.

Patented Dec. 23, 1919.

EDWARD 1). mm, or AKRON, oHIo, ASSJIGNOR TO THE rmEsroNE TIRE nuniwianh n 1 COMPANY, or AKRON, 01110, ACORIE'ORATION or 01110. Y

BEAD-ITRIMMIVENG MACHINE.

Application filed May 21, 1918. Serial No. 235,852.

To all whom it ma concern:

Be it known that I, EDWARD PurT, a' citizen of the United States, residing at- 'Akron, in' the county of Summit, State of Ohio, have invented certain new and useful Improvements in Bead-TrimmingfMa chines, of which the following is a specification.

. Beads required for use in the manufac ture of automobile tire casings are covered wlth fabric and before being incorporated in the casing, are semi-cured in circular form in a mold which causes a rind of rubber and fabric to be formed on the two edges of .the bead where the mold separates. These rinds have to. be trimmed off before the bead can be incorporated in the tire,

which work was formerly done by hand, butthe machine I have devised is designed to do the work better and more rapidly than it could be done 'by hand. As the beads are circular in form, it is necessary to have the cutting mechanism open up to'admit and discharge the beads and the machine devised by me opens up quickly and closes together without danger of injuring the lgnives and automatically seats the bead accurately in the cutting mechanism.

One embodiment of my invention is shown in the. drawings accompanying this specification, but it is obvious that details may be varied without departing from the invention or sacrificing any of its benefits.

Figure 1. is a side elevation of the machine showing ahead in position to be trimmed.

Fig. 2 is an enlarged view showing the cutting mechanism open to receivethe bead. Themachine is mounted on a table 1 and comprisesa standard 2 which is bored out to receivethe several operating shafts. The main operating shaft is shown at 3, and is driven through the medium of a sprocket Wheel 4 having a clutch'surface 5 on its ini side face. The Wheel 4 i s looseon the shaft,

butarranged to operate it jt'hrough a clutch member 6, the parts 5 and 6 having preferably shallow clutch facesso thatfthe shaft will not be started in rotatiqm until the parts are in the proper position.

The clutch is arranged to be shifted by a s anner member 7 carried on a shift rod 8 sl idably mounted in the lower part of the I standard.

On the end of shaft 3 opposite to the clutch members is secured one of the mem- Specification of Letters Patent.

The roller 12 is now releas 21 forces it over against Patented Dec. 23, 1919.1

bers of the bead supporting and trimming mechanism. This member is indicated by the numeral 9 and comprises a'cylindrical edgeif member 10 having a knife edge 11 adjacent to which is-a tapering supporting surface i adapted to, receive the bead and. shaped to 5 1 conform to one side of it. Located outwardly of the roller 9,is a second r'0ller'f'12, I the innerface of which isvtaperedto fit a second. side of the head, the. upper'edge '13 i being a cutting edge. The roller 12 isar ranged to be mcved away from thero1 1erf9" by a spanner 1% secured to the rod 8.- The slide rod is moved-to the rightofFrig -i I by bell crank lever 15; pivoted at 16i o'n1 t ab end b in slotted a 1m" pass over' pin '18 on the spanner, the other end beingconnected to rod 19 which in turn connected to a foot treadle shown). .On the end of the shaft is secured a collar .20 between which and the v ler i a l s ri 2 h pn pqs iol hi h i a h d h r ll rs n 1' gh ly together n Ord r a po i iqn th bea accugae y, a d h d t k ive in le in reaion. 1

' Above the shaft 3 in the standard ismonnfi QQuif r shaft 22, rying' r 23 in mesh with gear 24 ,Oi the ,shaftfi. The end of .the shaft over the rOllerQ'carriesLa 8 5 cylindrical roller 25, the er phery ,of it is shaped o r a nd wi h the r ma nin surfaceflof the bead and the edges =26 a1 1fd 27 which are sharpened to cooperate with the knife edges 11 and 13. .90

When a bead isto be -trimmed the bell crank lever 15 rocked to .open the trim.- mingknives as shown in Fig. 2qand the cir cular headis dropped into its place resting I in the lower roller 11, the two .e on which the rind occurs on top off the b and hesprl g M 1 ascerately positioning the bead and placing the nd between h a -m ed e has; 1 119 and I3 and 27.

vention is not limited to the particular use shown herein but may be of general application by means of changes within mechanical skill, and while it is shown in use on clencher beads, by suitable redesigning of the rolls it can be made for any other type of head.

I claim:

1. In a machine for trimming beads the combination of three rollers shaped to conform to the sides of the bead, the rollers being provided with cutting edges at their lines of contact and means to move one of said rollers laterally to admit the bead.

2. In a machine for trimming beads, the combination of a roller having a surface conforming to one side of the bead and a cutting edge at the limit of said surface, a

second roller having a surface conforming to a second side, of the bead, and a cutting edge at the limit of said surface, means .to move one of said rollers laterally to admit the bead and a third roller having cutting edges cooperating with ,the aforementioned cutting edges and conforming to the third side of the bead.

3. In a machine for trimming beads, the combination of two rollers contacting two sides of the bead and having cutting edges, a third roller contacting the remaining side of the bead and having cutting edges-cooperating with the first named cutting edges, the cutting edges overlapping, and means to move one of the first mentioned "rollers laterally to admit the bead.

4. In a machine for trimming beads, the combination .of two rollers having surfaces conforming to two surfaces of the bead, and having cutting edges at the limits of the surfaces, a third roller located between the first two rollers and having cutting edges overlapping the first named cutting edges, and means to move one of said rollers laterally to admit the bead.

5. In a machine for trimming material, the combination of three rollers having cutting edges in overlapping relation and surfaces conformin to the material to be trimmed, one of said rollers being located between the other two, and means for moving one of the outside rollers laterally to admit the material, and means to force the rollers together to seat it in position surrounded by the rollers.

EDWVARD D. PUT T. 

